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Finding the Fourth Proportional to 11,791.01, 17,670.89 and 8,656.36

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Solution

The fourth proportional to 11,791.01, 17,670.89 and 8,656.36 is: 12,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.01 : 17,670.89 = 8,656.36 : x
  2. Step 2: Convert to fraction form
    11,791.01/17,670.89 = 8,656.36/x
  3. Step 3: Cross multiply
    11,791.01x = 17,670.89 × 8,656.36
  4. Step 4: Simplify right side
    11,791.01x = 152,965,497.90
  5. Step 5: Solve for x
    x = 152,965,497.90/11,791.01
  6. Step 6: Final answer
    x = 12,973.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.